HP elitebook 850 G6 bios chip

[baselse]

Hi, I am trying to remove the bios admin password of a HP elitebook 850 G6.
I have a pomona clip for programming the bios.
Is this the right bios chip? see red circle in the photo.

[lapfix]

Re: HP elitebook 850 G6 bios chip

yes

[baselse]

Re: HP elitebook 850 G6 bios chip

Thanks.
It is a winbond 25Q256JVEN
Which programmer would you recommend with this?

[baselse]

Re: HP elitebook 850 G6 bios chip

Thinking about buying this programmer:
https://www.reveltronics.com/en/prod...programmer-usb
In the support list is mentions W25Q256JV
Would it also support the Winbond 25Q256JVEN which is on my Elitebook 850 G6?

[SMDFlea]

Re: HP elitebook 850 G6 bios chip

Its a good programmer. The TL866II is a good choice too,with cheaper adapters. Check if your bios chip is SOP8 (with legs) or WSON8 (no legs) .If its WSON8 you may need to desolder it,and use a WSON8 adapter, or buy a WSON8 pogo pin clip.

[baselse]

Re: HP elitebook 850 G6 bios chip

It has legs, so it must be SOP8.
Thanks, I will look for a TL866II then.

[baselse]

Re: HP elitebook 850 G6 bios chip

I managed to read the bios chip with my raspberry pi and flashrom.
To be sure the reading was ok, I read the chip 3 times, all files were the same and the size was 32 MB.

Then I used HP Unlocker to remove the password and I wrote the file to the bios chip.

So far so good, the laptop boots.

When I use esc to enter the bios during startup, I no longer get the screen where the administrator password is asked, and it even lets me boot from usb etc.
But in the bios menu, when I choose the menu "enter bios setup", I get asked for the administrator password again.

Are there multiple administrator passwords set?
How to remove all of them?

I attached the original bios as well as the file which HP Unlocker created.
Could somebody help me out?

[skinfus]

Re: HP elitebook 850 G6 bios chip

I managed to read the bios chip with my raspberry pi and flashrom.
To be sure the reading was ok, I read the chip 3 times, all files were the same and the size was 32 MB.

Then I used HP Unlocker to remove the password and I wrote the file to the bios chip.

So far so good, the laptop boots.

When I use esc to enter the bios during startup, I no longer get the screen where the administrator password is asked, and it even lets me boot from usb etc.
But in the bios menu, when I choose the menu "enter bios setup", I get asked for the administrator password again.

Are there multiple administrator passwords set?
How to remove all of them?

I attached the original bios as well as the file which HP Unlocker created.
Could somebody help me out?

Hi,

I also want to unlock the bios on my HP 850 G6. Which file did you use to remove bios password with HP unlocker? Could you send me the file and software?
It's my first time doing that so I need some help =)

Thanks

[lapfix]

Re: HP elitebook 850 G6 bios chip

Hi,

I also want to unlock the bios on my HP 850 G6. Which file did you use to remove bios password with HP unlocker? Could you send me the file and software?
It's my first time doing that so I need some help =)

Thanks

Hello
For software you have 2 :

https://www.badcaps.net/forum/showth...ght=hpunlocker

https://www.badcaps.net/forum/showth...ght=hpunlocker

Just dump your file , drag and drop to RCunlocker or hpunlocker file and you got your unlocked file

[skinfus]

Re: HP elitebook 850 G6 bios chip

Great! Thanks =)
I'll try as soon as I receive my CH341A reader.
It seems there's 2 bios chips on the 850G6, one 32MB (the one on your picture) and an other one of 16Mb at the back.
To fully remove the password it seems you need to unlock the 16mb chip

[skinfus]

Re: HP elitebook 850 G6 bios chip

Hello
For software you have 2 :

https://www.badcaps.net/forum/showth...ght=hpunlocker

https://www.badcaps.net/forum/showth...ght=hpunlocker

Just dump your file , drag and drop to RCunlocker or hpunlocker file and you got your unlocked file

Could you also tell me which software you've used to read the chip? I got asprogrammer but my MX25L25673GZ41 does not appear in the list.

[adamgouadma]

Re: HP elitebook 850 G6 bios chip

a HP elitebook 850 G6. 25L128B

[niggi]

Re: HP elitebook 850 G6 bios

yes

please remove bios password
SN# 5CG0104XWJ

[SMDFlea]

Re: HP elitebook 850 G6 bios

please remove bios password
SN# 5CG0104XWJ

Read post #10 .Have you tried RCUnlocker ?

https://www.badcaps.net/forum/showthread.php?t=103526

.

[niggi]

Re: HP elitebook 850 G6 bios

read post #10 .have you tried rcunlocker ?

https://www.badcaps.net/forum/showthread.php?t=103526

.

yes but still locked

[SMDFlea]

Re: HP elitebook 850 G6 bios

yes but still locked

On the 16MB chip ?

[niggi]

Re: HP elitebook 850 G6 bios

On the 16MB chip ?

BOTH CHIPS I'll try but its locked

[nolimit]

can someone help me, to clear PW on Main Bios, because i cant read the 16mB File

[SMDFlea]

RULES UPDATE for BIOS requests/offers AVOID BANNING, READ BEFORE POSTING
https://www.badcaps.net/forum/troubl...before-posting

You MUST:

• Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://badcaps.net/forum/showthread.php?t=88758 )